Where is the ctrl f function now on iPad in safari?

If you want to find something in Safari, type the search term in the address bar, then scroll down to "On This Page".

If you want to search for something on a webpage then start typing it in the URL field and you should get a screen where one of the options on it is 'on this page' :

King Penguin - this was

King Penguin, this was such a helpful answer, thank you. You actually explained where to type your search criterion. Am entirely new to ipads and trying for the first time to use instead of a pc, purely for the ease of mobility while I'm travelling. Thank you.